Now moving on the next step, you need to setup an account on thingspeak. Its an online service which allows you to send and read data for your IOT applications. Just visit the thingapeak website and create an account giving in the desired details.
On the thingapeak portal, create a new channel and add the information correctly. Carefully notedown your write and read keys because you'll need themin the next steps.
After you have created the channel, navigate to the channels option from menu and click on your newly created channel and you'll be presented with the screen similar to the one shown below and click on the API keys option highlighted in the image.
Notedown your read and write API keys carefully as you'll need these in order to run your IOT software and mobile app.